THE MOLLUSCA—HEDLEY. 495 
This species is employed on Funafuti in the manufacture of 
fish-hooks (ante p, 268). I purchased a valve from a native on 
Nukulailai. 
Cuming procured the type at Marutea, Paumotus. 
MELINA SAMOENSIS, Daird. 
Baird, in Brenchley, Cruise of the “ Curacoa,” 1873, p. 454, pl. 
sli) fe8. 
Common ; attached to the under surfaces of coral blocks on the 
ocean beach of Funafuti, at low water. My specimens exceed 
the type in size, being upwards of 50 mm. in length. 
T suspect that the prior P. linguweformis, Reeve, from the 
Society Islands, is but a depauperated form of this. The 
“Challenger” collected M. samoensis on the reefs at Honolulu 
and Hawaii; the type came from Tutuila, Samoa. 
Both Meek and Dall have pointed out* that the name of Perna 
must be superseded by that of Melina. 
PINNA, sp. 
Some fragments of a Pinna, perhaps LP. trigonalis, Pease, were 
seen on the lagoon beach of Funafuti. 
OsTREA HANLEYANA, Sowerby. 
Sowerby, Conch. Icon., xviii. 1871, Ostrea, Pl. xxviii, sp. 72. 
An oyster which occurred under stones beside J. samvoensis is 
with much doubt so identified. 
OsTREA CRISTAGALLI, Linne. 
Sowerby, loc. cit., pl. xi., sp. 22. 
Obtained in eighteen fathoms, three miles south-west of the 
village (ante p. 328). 
I collected this at Port Moresby, British New Guinea. It is 
represented in this Museum from Florida, Solomons ; Havannah 
Harbour, New Hebrides ; and Ouvea, Loyalties. 
CARDITA SWEETI, Sp. nov. 
(Fig. 50). 
Shell solid, oblong, slightly oblique, inequilateral, little inflated. 
Colour dull white, upon the beak pale yellow. Sculptured by 
about forty-five close, raised, radiating ribs, separated by deep 
interstices a quarter of their width. In the median area the 
rays are smaller and closer together than at the sides, while 
at the extremities they rapidly enlarge and rather recurve. Upon 
* Meek—Report U.S. Geol. Survey Territories, ix., 1876, p. 28, note; 
Dall—Trans. Wagner Free Inst. Sci., iii., 1898, p. 6665. 
